| Semandang | |
| States: | Indonesia |
| Region: | Kalimantan |
| Speakers: | 20,000 |
| Date: | 2004 |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | Land Dayak |
| Fam4: | Southern Land Dayak |
| Iso3: | sdq |
| Glotto: | sema1269 |
| Glottorefname: | Onya Darat |
Semandang, or Onya Darat, is a Dayak language of Borneo.
In 2020, the original ISO 639-3 code for Semandang was split into three separate codes for Beginci, Gerai, and Semandang.